Anti-BHLHA15 Antibody

BHLHA15 (basic helix-loop-helix protein 15), also known as MIST1 (muscle intestine and stomach expression 1) belongs to the bHLH family of transcription factors and plays a role in regulating the transcriptional activity of MYOD1 in muscle cell development as well as serving as a key regulator of acinar cell function (1,2) . BHLHA15 contains a basic helix-loop-helix (bHLH) domain and is capable of binding to E-box motifs as a homodimer or a heterodimer with E-proteins. It may also negatively regulate bHLH-mediated transcription through a N-terminal repressor domain (3) . It is expressed in mammary epithelial cells and is essential for the regulation of mammary gland development (4) .

BHLHA15 antibody was raised against a 18 amino acid peptide near the center of human BHLHA15. The immunogen is located within amino acids 60 - 110 of BHLHA15.

Plays a role in controlling the transcriptional activity of MYOD1, ensuring that expanding myoblast populations remain undifferentiated. Repression may occur through muscle-specific E- box occupancy by homodimers. May also negatively regulate bHLH- mediated transcription through an N-terminal repressor domain. Serves as a key regulator of acinar cell function, stability, and identity. Also required for normal organelle localization in exocrine cells and for mitochondrial calcium ion transport. May function as a unique regulator of gene expression in several different embryonic and postnatal cell lineages. Binds to the E- box consensus sequence 5'-CANNTG-3' (By similarity) .